Bump bootstrap from 3.3.7 to 3.4.1 in /site/app
Bump bootstrap from 3.3.7 to 3.4.1 in /site/app

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 3.3.7 to 3.4.1.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](https://github.com/twbs/bootstrap/compare/v3.3.7...v3.4.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
BioGRID/ORCA,BioGRID/ORCA,BioGRID/ORCA,BioGRID/ORCA